I have been owning a XR-C303RW for years and having a problem that its AUX/D-IN is not sensitive enough to my turn table, i.e. even its maximum level I can not replay my turn table sound. Is there any way that I can adjust an amplifying level of AUX in the C303RW unit? I would be very much appreciated for your any suggestion. B Moon at LA, USA.
SOURCE: aiwa mini-component
gidday mate... it does sound like a failure in the audio output stage. I suggest that you first check the speakers for short circuits as a fault here will produce a similar symptom you described. Check that you have the correct DC conditions about the STK, such as main power supply. Check all resistors that are in proximity to the STK, particularly lower value ones. Look also for shorted or dry capacitors about the output stages. Most of the audio signal path amplification is inside the STK and generally only a few millivolts of audio are provided to the input pins(usually the outermost pins). I have looked online for a data sheet on the chip that may be of help to you, but have not yet been able to find one. If the unit has soft touch electronically switched input selectors or electronic attenuator to the vol control, either of these IC,s may be faulty also. I am happy to keep going with this to help you fix it if you want. Give me a hoy back in here and I will :)
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